Find and Replace Post-Mortem

Solution

# Fix every tag but the first one
sed -i '/^tags:/s/,\ /\n-\ /g' *
# Fix the first tag
sed -i '/^tags:/s/ /\n-\ /g' *

Stats of Interest

Time to complete task: about 10 minutes

Final result: fixed blog posts of interest

Next Time

Do the "sed one-liner" mutation.